Greatest Common Factor Quiz

What is the greatest common factor (GCF) of 18 and 24?

• 6

• 3

Find the GCF of 36 and 60.

• 6

• 12

What is the greatest common factor of 48 and 64?

• 4

• 16

Determine the GCF of 81 and 27.

• 27

• 9

What is the greatest common factor of 14 and 49?

• 14

• 7

Find the GCF of 100 and 25.

• 25

• 5

What is the greatest common factor of 56 and 42?

• 14

• 21

Determine the GCF of 32 and 96.

• 16

• 8

What is the greatest common factor of 45 and 75?

• 15

• 30

Find the GCF of 21 and 28.

• 14

• 7